﻿/*
 * MIT License
 *
 * Copyright (c) 2018 Clark Yang
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of 
 * this software and associated documentation files (the "Software"), to deal in 
 * the Software without restriction, including without limitation the rights to 
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies 
 * of the Software, and to permit persons to whom the Software is furnished to do so, 
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all 
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 
 * SOFTWARE.
 */

using Loxodon.Framework.Execution;
using System;
using UnityEngine;

namespace Loxodon.Framework.XLua.Loaders
{
    public class AssetBundleLoader : PathLoaderBase
    {
        private AssetBundle bundle;

        public AssetBundleLoader(AssetBundle bundle, string prefix) : this(bundle, prefix, ".lua.txt")
        {
        }

        public AssetBundleLoader(AssetBundle bundle, string prefix, string suffix) : base(prefix, suffix)
        {
            this.bundle = bundle;
        }

        protected override byte[] Load(ref string path)
        {
            if (this.bundle == null)
                return null;

            TextAsset text = bundle.LoadAsset<TextAsset>(this.GetFullname(path));
            if (text == null)
                return null;

            return text.bytes;
        }

        #region IDisposable Support
        private bool disposedValue = false;

        protected override void Dispose(bool disposing)
        {
            if (!disposedValue)
            {
                if (bundle != null)
                {
                    Executors.RunOnMainThread(() =>
                    {
                        bundle.Unload(false);
                        bundle = null;
                    });
                }
                disposedValue = true;
            }
        }
        #endregion
    }
}